The Universal Sound Module (USM) consists of two components: 

The actual plug-in "Universal Module" and the file "usm2.data" which is the soundbank . 
Both files (and a PDF document with further information on the USM) are located in the enclosed folder "Steinberg USM".

INSTALLATION

1. Quit Cubase.
2. Move the folder "Steinberg USM" to the standard folder for VST plug-ins in Mac OS X:

Macintosh HD/Library/Audio/Plug-Ins/VST

3. Next time you start Cubase the USM is available as VST Instrument. 
